Treatment of 1-P
iPr
2-2-NMe
2-indene (
2[H]) with BrMn(CO)
5 provided
2-
P,
N-(2-NMe
2-3-P
iPr
2-indene)Mn(CO)
3Br (
4) in 73% yield. Addition of either AgBF
4 or AgSO
3CF
3 to
4 yieldedthe corresponding inner-sphere tetrafluoroborate (
5a) and triflate (
5b) complexes in 62%and 65% yield, respectively. Deprotonation of
4,
5a, or
5b produced an intractable mixtureof products. The cationic complex [
2-
P,
N-(2-NMe
2-3-P
iPr
2-indene)Mn(CO)
4]
+BF
4- (
6) wasprepared in 30% yield by treating BrMn(CO)
5 with AgBF
4, followed by the addition of
2[H].The benzocymantrene
5-[
2]Mn(CO)
3 was prepared in 56% yield via reduction of
5-(2-NMe
2-3-P(S)
iPr
2-indenyl)Mn(CO)
3 with Cl
3SiSiCl
3. Compound
2[Li] reacts with BrMn(CO)
5 to givea complex product mixture, from which
4 and [
2-
P,
N-(2-NMe
2-3-P
iPr
2-indene)Mn(CO)
4]
+[Mn
2(CO)
8(
![](/images/entities/mgr.gif)
-P
iPr
2)]
- (
7) were isolated. 2-Dimethylaminoindene (
1[H]) was silylated to give1-SiMe
3-2-NMe
2-indene (
8[H]) in 93% yield. Treatment of
8[Li] with ClP
iPr
2, followed bythe addition of BrMn(CO)
5, afforded
2-
P,
N-(1-SiMe
3-2-NMe
2-3-P
iPr
2-indene)Mn(CO)
3Br (
10)in 27% yield. Alternatively, addition of
8[Li] to BrMn(CO)
5 followed by the addition ofClP
iPr
2 generated a mixture of products, from which the substituted 1,1'-biindene
rac-(2-NMe
2-3-SiMe
3-C
9H
5)
2 (
rac-
12) was isolated. Treatment of
1[Li] with BrMn(CO)
5 provided
5-(2-NMe
2-indenyl)Mn(CO)
3 (
11) in 41% yield. Single-crystal X-ray diffraction data for
4·0.5C
7H
8,
5a·0.5C
7H
8,
5b,
6,
5-[
2]Mn(CO)
3,
7·0.5C
7H
8,
10,
11, and
rac-
12 are reported.